PNGTest.php

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<?php
 
class PNGHandlerTest extends MediaWikiMediaTestCase {
 
    protected $handler;
 
    protected function setUp() {
        parent::setUp();
        $this->handler = new PNGHandler();
    }
 
    public function testInvalidFile() {
        $res = $this->handler->getMetadata( null, $this->filePath . '/README' );
        $this->assertEquals( PNGHandler::BROKEN_FILE, $res );
    }
 
    public function testIsAnimanted( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->isAnimatedImage( $file );
        $this->assertEquals( $expected, $actual );
    }
 
    public static function provideIsAnimated() {
        return [
            [ 'Animated_PNG_example_bouncing_beach_ball.png', true ],
            [ '1bit-png.png', false ],
        ];
    }
 
    public function testGetImageArea( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->getImageArea( $file, $file->getWidth(), $file->getHeight() );
        $this->assertEquals( $expected, $actual );
    }
 
    public static function provideGetImageArea() {
        return [
            [ '1bit-png.png', 2500 ],
            [ 'greyscale-png.png', 2500 ],
            [ 'Png-native-test.png', 126000 ],
            [ 'Animated_PNG_example_bouncing_beach_ball.png', 10000 ],
        ];
    }
 
    public function testIsMetadataValid( $metadata, $expected ) {
        $actual = $this->handler->isMetadataValid( null, $metadata );
        $this->assertEquals( $expected, $actual );
    }
 
    public static function provideIsMetadataValid() {
        // phpcs:disable Generic.Files.LineLength
        return [
            [ PNGHandler::BROKEN_FILE, PNGHandler::METADATA_GOOD ],
            [ '', PNGHandler::METADATA_BAD ],
            [ null, PNGHandler::METADATA_BAD ],
            [ 'Something invalid!', PNGHandler::METADATA_BAD ],
            [
                'a:6:{s:10:"frameCount";i:0;s:9:"loopCount";i:1;s:8:"duration";d:0;s:8:"bitDepth";i:8;s:9:"colorType";s:10:"truecolour";s:8:"metadata";a:1:{s:15:"_MW_PNG_VERSION";i:1;}}',
                PNGHandler::METADATA_GOOD
            ],
        ];
        // phpcs:enable
    }
 
    public function testGetMetadata( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->getMetadata( $file, "$this->filePath/$filename" );
//      $this->assertEquals( unserialize( $expected ), unserialize( $actual ) );
        $this->assertEquals( ( $expected ), ( $actual ) );
    }
 
    public static function provideGetMetadata() {
        // phpcs:disable Generic.Files.LineLength
        return [
            [
                'rgb-na-png.png',
                'a:6:{s:10:"frameCount";i:0;s:9:"loopCount";i:1;s:8:"duration";d:0;s:8:"bitDepth";i:8;s:9:"colorType";s:10:"truecolour";s:8:"metadata";a:1:{s:15:"_MW_PNG_VERSION";i:1;}}'
            ],
            [
                'xmp.png',
                'a:6:{s:10:"frameCount";i:0;s:9:"loopCount";i:1;s:8:"duration";d:0;s:8:"bitDepth";i:1;s:9:"colorType";s:14:"index-coloured";s:8:"metadata";a:2:{s:12:"SerialNumber";s:9:"123456789";s:15:"_MW_PNG_VERSION";i:1;}}'
            ],
        ];
        // phpcs:enable
    }
 
    public function testGetIndependentMetaArray( $filename, $expected ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actual = $this->handler->getCommonMetaArray( $file );
        $this->assertEquals( $expected, $actual );
    }
 
    public static function provideGetIndependentMetaArray() {
        return [
            [ 'rgb-na-png.png', [] ],
            [ 'xmp.png',
                [
                    'SerialNumber' => '123456789',
                ]
            ],
        ];
    }
 
    public function testGetLength( $filename, $expectedLength ) {
        $file = $this->dataFile( $filename, 'image/png' );
        $actualLength = $file->getLength();
        $this->assertEquals( $expectedLength, $actualLength, '', 0.00001 );
    }
 
    public function provideGetLength() {
        return [
            [ 'Animated_PNG_example_bouncing_beach_ball.png', 1.5 ],
            [ 'Png-native-test.png', 0.0 ],
            [ 'greyscale-png.png', 0.0 ],
            [ '1bit-png.png', 0.0 ],
        ];
    }
}